XtSetLanguageProc(3) XT FUNCTIONS XtSetLanguageProc(3)

NAME

XtSetLanguageProc - set the language procedure

SYNTAX

Widget XtSetLanguageProc(XtAppContext app_context, XtLanguageProc
proc, XtPointer client_data);

ARGUMENTS

app_context
Specifies the application context in which the language
procedure is to be used, or NULL.

proc Specifies the language procedure, or NULL.

client_data
Specifies additional client data to be passed to the
language procedure when it is called.

DESCRIPTION

XtSetLanguageProc sets the language procedure that will be called
from XtDisplayInitialize for all subsequent Displays initialized in
the specified application context. If app_context is NULL, the
specified language procedure is registered in all application
contexts created by the calling process, including any future
application contexts that may be created. If proc is NULL a default
language procedure is registered. XtSetLanguageProc returns the
previously registered language procedure. If a language procedure has
not yet been registered, the return value is unspecified but if this
return value is used in a subsequent call to XtSetLanguageProc, it
will cause the default language procedure to be registered.

The default language procedure does the following:

+o Sets the locale according to the environment. On ANSI C-based
systems this is done by calling setlocale( LC_ALL, language ).
If an error is encountered a warning message is issued with
XtWarning.

+o Calls XSupportsLocale to verify that the current locale is
supported. If the locale is not supported, a warning message is
issued with XtWarning and the locale is set to ``C''.

+o Calls XSetLocaleModifiers specifying the empty string.

+o Returns the value of the current locale. On ANSI C-based systems
this is the return value from a final call to setlocale( LC_ALL,
NULL ).

A client wishing to use this mechanism to establish locale can do so
by calling XtSetLanguageProc prior to XtDisplayInitialize.

SEE ALSO

X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface

X Version 11 libXt 1.1.5 XtSetLanguageProc(3)